AIRSHIPS A brief look
BALLOON Balloon – this is a lighter-than-air craft consisting of a large spherical, pliant bag made of varnished silk, rubber, or other suitable nonporous material, and containing either hot air or a gas that is lighter than air. Piloted balloons carry one or more persons in a suspended gondola; unpiloted balloons carry instruments used to measure and record a variety of physical phenomena. Pliant – еластичний Varnished – той, що має спеціальне покриття
Brief History 1. In 1783 two French brothers, Jacques Etienne and Joseph Michel Montgolfier, wealthy papermakers of Annonay, France, sent up a balloon filled with hot air, and the French physicist, chemist, and aeronaut Jacques Alexandre Cesar Charles released one filled with hydrogen, which made a successful two-hour flight, covering 43 km (27 mi).
Airships
Buoyancy n In physics, buoyancy is the upward force on an object produced by the surrounding liquid or gas in which it is fully or partially immersed, due to the pressure difference of the fluid between the top and bottom of the object. The net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body.
Airships come in three classes: rigid, semirigid, and nonrigid.
4 New 'Blimp' Designs Bring Return of the Airship n Aeros’s new ballast-free airship design may soon be tested for the Pentagon in a demonstration craft.
n Skycat-20 n Description: The cargo-hauling Sky. Cat -20 features retractable hovercushion engines that allow for vertical takeoffs and landings and can also be reversed, eliminating the need for a ground crew or handling equipment. Variants could include firefighting blimps. Designer: World Skycat
Vertical Airships Vertical Takeoff and Landing Airships
WHY VERTICAL? Better structural efficiency when carrying ultra-heavy loads Easier to navigate in urban environments Simple masting system Simple construction system Scalable Platform Interesting aerodynamic characteristics
